Mystery of the pyramids' alignment finally solved by simple shadow trick
February 20, 2018, 5:33 p.m. by Bryan Nelson
How the ancient Egyptians built such precise structures may not have been so complicated after all.
Fabled 'Gate to Hell' really did kill people — and now we know why
February 20, 2018, 4:41 p.m. by John Platt
The ancient Romans saw 'Pluto's Gate' as the entrance to the underworld.
It's time to tell 'senior citizens' to take a hike
February 19, 2018, 1:48 p.m. by Lloyd Alter
It's time to think about the words we use.